code: def received_headers(self, headers):
      if TRACE_HEADER in headers:
          trace_id = headers[TRACE_HEADER][0]
          print("Found trace header with value:", trace_id)
  
imports: import argparse
  import sys
  import threading
  import uuid
  import pyarrow
  import pyarrow.flight
label_desc: Use image node_id 2 for calling the TracingClientMiddleware obj's underlying member method code with example usage: obj.received_headers(headers) without return types